DocumentCode :
1518602
Title :
PETRIC-a positron emission tomography readout integrated circuit
Author :
Pedrali-Noy, M. ; Gruber, G. ; Krieger, B. ; Mandelli, E. ; Meddeler, G. ; Moses, W. ; Rosso, V.
Author_Institution :
Lawrence Berkeley Lab., CA, USA
Volume :
48
Issue :
3
fYear :
2001
fDate :
6/1/2001 12:00:00 AM
Firstpage :
479
Lastpage :
484
Abstract :
We present the architecture, critical design issues, and performance measurements of PETRIC, a 64-channel mixed signal front-end integrated circuit for reading out a photodiode array coupled with Lu 2SiO5[Ce] scintillator crystals for a medical imaging application: positron emission topography. Each channel consists of a low-noise charge-sensitive preamplifier, an RC-CR pulse shaper and a winner-take-all multiplexer that selects the channel with the largest input signal. Triggered by an external timing signal, a switch opens and a capacitor stores the peak voltage of the winner channel. The shaper peaking time is adjustable by means of external current inputs over a continuous range of 0.7 μs to 9 μs. Power consumption is 5.4 mW per channel, measured equivalent noise charge at 1-μs peaking time, zero leakage current is 33 rms electrons plus 7.3 rms electrons per pF of input capacitance. Design is fabricated in 0.5-μm 3.3-V complementary metal-oxide semiconductor technology
Keywords :
CMOS integrated circuits; biomedical electronics; positron emission tomography; pulse shaping circuits; readout electronics; Lu2SiO5[Ce] scintillator crystals; PETRIC; RC-CR pulse shaper; complementary metal-oxide semiconductor technology; low-noise charge-sensitive preamplifier; medical imaging application; mixed signal front-end integrated circuit; photodiode array; positron emission tomography readout integrated circuit; winner-take-all multiplexer; Application specific integrated circuits; Biomedical imaging; Coupling circuits; Crystals; Electrons; Measurement; Photodiodes; Positron emission tomography; Signal design; Switches;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/23.940103
Filename :
940103
Link To Document :
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